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All results from a given calculation for CH3SeCH3 (dimethylselenide)

using model chemistry: QCISD/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/aug-cc-pVDZ
 hartrees
Energy at 0K-2479.544516
Energy at 298.15K-2479.548579
HF Energy-2479.042580
Nuclear repulsion energy185.160905
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3157 3058 11.02      
2 A1 3049 2954 26.65      
3 A1 1468 1422 0.27      
4 A1 1327 1286 3.03      
5 A1 982 951 12.98      
6 A1 602 583 0.15      
7 A1 211 204 0.00      
8 A2 3149 3050 0.00      
9 A2 1449 1404 0.00      
10 A2 899 871 0.00      
11 A2 144 139 0.00      
12 B1 3143 3045 17.56      
13 B1 1459 1414 9.20      
14 B1 928 899 6.86      
15 B1 152 147 0.18      
16 B2 3157 3058 5.42      
17 B2 3052 2957 24.78      
18 B2 1462 1416 11.08      
19 B2 1305 1264 11.79      
20 B2 864 837 0.11      
21 B2 621 601 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 16289.5 cm-1
Scaled (by 0.9687) Zero Point Vibrational Energy (zpe) 15779.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD/aug-cc-pVDZ
ABC
0.36712 0.22865 0.14911

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Se1 0.000 0.000 0.482
C2 0.000 1.456 -0.833
C3 0.000 -1.456 -0.833
H4 0.000 2.406 -0.277
H5 0.000 -2.406 -0.277
H6 0.904 1.401 -1.459
H7 -0.904 1.401 -1.459
H8 -0.904 -1.401 -1.459
H9 0.904 -1.401 -1.459

Atom - Atom Distances (Å)
  Se1 C2 C3 H4 H5 H6 H7 H8 H9
Se11.96161.96162.52302.52302.55892.55892.55892.5589
C21.96162.91131.10123.90171.10131.10133.06073.0607
C31.96162.91133.90171.10123.06073.06071.10131.1013
H42.52301.10123.90174.81241.79641.79644.08744.0874
H52.52303.90171.10124.81244.08744.08741.79641.7964
H62.55891.10133.06071.79644.08741.80803.33392.8010
H72.55891.10133.06071.79644.08741.80802.80103.3339
H82.55893.06071.10134.08741.79643.33392.80101.8080
H92.55893.06071.10134.08741.79642.80103.33391.8080

picture of dimethylselenide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Se1 C2 H4 107.585 Se1 C2 H6 110.134
Se1 C2 H7 110.134 Se1 C3 H5 107.585
Se1 C3 H8 110.134 Se1 C3 H9 110.134
C2 Se1 C3 95.820 H4 C2 H6 109.298
H4 C2 H7 109.298 H5 C3 H8 109.298
H5 C3 H9 109.298 H6 C2 H7 110.339
H8 C3 H9 110.339
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability